The increase in stock buyback authorization by $3 billion to a total of $10.3 billion indicates that Lockheed Martin is confident in its financial position. Stock buybacks often lead to a reduction in the number of shares outstanding, which can increase earnings per share and potentially boost the stock price. The lack of an expiration date for the buyback program provides flexibility for the company to repurchase shares as it sees fit, which is generally viewed positively by investors.